Recent questions tagged #metal

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Oxygen Absorber-Oxygen Absorber

asked Oct 29, 2019 in 5G Network by anonymous

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If 102y = 25, then 10-y equals: (a) -1/5, (b) 1/625, (c) 1/50, (d) 1/25, (e) 1/5

asked May 21, 2019 in Mathematics by sheetalkhandelwal

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A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature? Identify A and B. Write down the reactions of oxide B with HC1 and NaOH

asked May 17, 2019 in Other by Derya

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Samples of five metals ‘A’, ‘B’, ‘C’, ‘D’ and ‘E’ were taken and added to the following solution one

asked May 17, 2019 in Other by Derya

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Compound X and aluminium are used to join railway tracks.

asked May 17, 2019 in Other by Derya

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A student was given Mn, Zn, Fe and Cu metals. Identify which of them

asked May 17, 2019 in Other by Derya

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A metal ‘X’ loses two electrons and a non-metal ‘Y’ gains one electron. Show the electron dot structure of compound formed between them. Is ionic or covalent? Does it have high melting point or low? Will it conduct electricity in solid state or in aqueous solution and why?

asked May 17, 2019 in Other by Derya

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A non-metal A is an important constituent of our food and forms two oxides B and C. Oxide B is toxic whereas C causes global warming.

asked May 17, 2019 in Other by Derya

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An element A reacts with water to form a compound B which is used in white washing. The compound

asked May 17, 2019 in Other by Derya

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A non-metal A which is the largest constituent of air, when heated with H2 in 1 : 3 ratio in the presence of catalyst (Fe) gives a gas B. On heating with O2, it gives an oxide C. If this oxide

asked May 17, 2019 in Other by Derya

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